Nut-lock.



NUT LOCK.

APPLICATION FILED MA1/1, 19114 Patented July 116, 1912.- y

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. WILLIAM A. moons, or GITHERSBURG, MARYLAND..

` NUT-Loox.

' Specification of LettersvPatental A. .iPattellttl-.Jy

Application led May 4, 1911. -Ser-ia1 No. 624,964.` 1

To all whom it may concern.

Be it `known that I, IVILLIAM A. MOORE, a citizen of the United States, residing at Gaithersburg, in the county of Montgomery and State of Maryland, have invented new and useful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to nut locks, and has for an object to provide a device Vof this character which will obviate the necessity of change in the construction of the bolt and which `will include means, whereby the `nut can be readily applied to the bolt and `positively held thereon against retrograde movement afterits desired adjustment has been obtained.

Another object of the invention is to provide a Group of fastening devices which are adjustztble in the nut tangential to the plane of the bolt opening, the said devices operating in opposition to each other so as to positively prevent their casual disengagement from the bolt.

Another object of the invention is to provide simple and eicient locking means which maybe quickly applied to or removed from the nut.

In the drawing, forming a portion of this specification and in which like numerals of reference indicate similar parts in the several views Figure 1 is a side view of a bolt and nut showingmy improved locking device applied thereto. Fig. 2- is a section taken on line 2 2 of Fig. 1 showing the 'locking devices in their disengaged posi-A tions. Fig. 3 is a similar view showing the locking devices in their engaged positions.v

Fig. 4 isv asection lon line 4 4 of Fig. 3. l Fig. 5 is a viewvsimilar to Fig. 3 showing a slightly modied form of the lnvention.

The bolt 1 shown herein is of'usual construction, being provided with the usual which are .disposed tangential with respect` to the bolt-receiving opening 5 of the nut,

the inner walls of said passages being rovidedwith openings 7 which are inv direct @communication with the bolt opening 5 of lthe nut. Fitted in each passage 6 is a lock- -ing device 8k whichv includes a threaded shank 9 having a head 10 at oneend seated in the countersunk or enlarged.portion 11 of the passage 6. Y

Each locking device is identical in construction, and as shown, the shank 9 thereof is provided with a concavity 12 which may be moved so as to be disposedsubstantially flush with the Wallsfof the bolt opening 5 in the nut on adjustment of the device .to its released position. .The threads of the fastening device which are arranged wholly within the Varea of the'concavity 12 are provided with relativelysharp cutting edges 13.

These edges are adapted lto `be securel moved into eeetive bitingtengagement w'it the threads of the bolt shank, as s'hownin Fig. 3. When ythe .locking device is adjusted so that its threads Vare in eective engagement with the bolt it will be understood that la portion ofthe shank of the device .will be against retrograde -movement after it hasv been moved to its full'adjusted position.

,In 'the form of the invention shown in Fig. 5, the bolt 14 is constructed of hard steel and provided with a threaded shank v 15, the forward en d of which being tapered toa relatively sharp point 16, as shown.

I claim.:

The `com )imaifm with, a .threaded bolt, Off' a nut adjustably mounted thereon, said nutv being provided with threaded ,passages arranged tangentially with respect tothe bolt receiving opening of Vthe nut, the inner walls of the said passages being provided' with.

openings which 'are in direct communication with the said bolt opening, oppositely extending screw threaded fasteningwdevices wholly carried-'by the nut` and arranged within the said threaded passages and adapted to be turned so that the threads thereof will be moved into effective grim-jing In testimony whereof Iv-afix my signature Aengagement with thev threads of the bolt, in presence of two Witnesses.v and each o-thesaid fastening devices being Provided with 'a cavity intermediate its ends'A l WILLIAM A MOORE' whereby thefsaiddevices may be turned to a Witnesses: released position 'to permit adjustments of JOHN J.y BATTIEWAY,

the nut Aon the bolt. Gr. R. GRAY. 

